| 摘要 |
DEVICE FOR THAWING GROUND A ground thawing apparatus has a housing containing a fire tube for generating high heat conditions within the housing. The housing is thermally insulated to prevent excessive heat loss. The roof of the housing is peaked and carries a steam trap along the underside of its ridges. The steam trap is a V-shaped baffle with inlet slots along the side edges, where it meets the roof, and outlet or drain openings in opposite ends of the housing, at the base of the V. The steam trap allows the escape of excessive amounts of moisture vapor from the housing without undue heat loss.
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